Polman

Anyone that have made surgery in the footwells ( hope thats the name of it)and changes the electric adjustable heating motors that is located on both sides……any hints on this. I dont find any documentation on this....

Rocket Rob

What are you trying to do? Are you having problems with the heat or A/C? If yes, then you need to troubleshoot your heater flap servos.

http://porsche964.co.uk/technical/servos.htm

Computamedic

AFAIK there are no servos in the footwells on a 964. All 5 servos are located in the luggage compartment forward of the windscreen. It's on the 993 that the mixing flap motors are in the footwells.

Regards

Dave

Polman

But...but...but, my Porsche mechanic connected the car to the diagnostic tool and said it was the flaps "Stellmotoren" that gave the red flag...located in the foot wells. He always knows what he’s doing, servicing 964 the hole day long....
I have searched and not found anything in Adrians book or in the Porsche PET lists drawings, so I am confused. There should be 5 servos and that’s correct regarding to the PET. Have to check that right now...( nice to have the car right underneath me in the warm garage)

Rocket Rob

+1 - The servos are inside the front trunk. Here are some reference diagrams of how the 964's heat/AC system works.





Heat/AC servo troubleshooting = http://porsche964.co.uk/technical/servos.htm

axl911

Where did you get this diagram? It is the best by far in explaining the HVAC air flow of the car.

Polman

Thanks Rocket Rob........In the link for the DIY, the problem is that he gets NO hot air.....I’m getting only HOT air....cant breath in the car!! The vents in the middle are delivering enough to heat some Knackwurst….I checked No 2 and 4 servos. The are responding on the temp **** when I’m turning from cold-hot.... Maybe some flaps somewhere in the middle of nothing that’s playing with me?

jimq

check the flaps in the rear footwell. maybe they arent opening to dump the hot air out.

Rocket Rob

Where did I get the diagrams? From here, of course. I too found them to be very helpful which is why I saved them to my computer.

Polman

-check the flaps in the rear footwell......good point. But exactly where do I check this. From engine compartment , from underneath or from inside ( not!)....compartment ....-Sorry but in 2 weeks time, I will have a lot more knowledge on this matter.....I like to take things apart!!
BTW...this is a Turbo......looks different from what I have been doing befor on my Carrera 2 and 4.....no blower where i usally finds it